Home / 2,259.76-3,118.08-1,420.96

Finding the Fourth Proportional to 2,259.76, 3,118.08 and 1,420.96

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Solution

The fourth proportional to 2,259.76, 3,118.08 and 1,420.96 is: 1,960.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,259.76 : 3,118.08 = 1,420.96 : x
  2. Step 2: Convert to fraction form
    2,259.76/3,118.08 = 1,420.96/x
  3. Step 3: Cross multiply
    2,259.76x = 3,118.08 × 1,420.96
  4. Step 4: Simplify right side
    2,259.76x = 4,430,666.96
  5. Step 5: Solve for x
    x = 4,430,666.96/2,259.76
  6. Step 6: Final answer
    x = 1,960.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.